<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "https://raw.githubusercontent.com/rbatis/rbatis/master/rbatis-codegen/mybatis-3-mapper.dtd">
<mapper>
    <select id="select_by_condition">
        `select * from activity`
        <where>
            <include refid="a"></include>
            <include refid="file://example.html?refid=a"></include>
        </where>
    </select>
</mapper>